#Question id: 4983
#SCPH28 | Zoology
As rat pups mature, the growth of their snouts and tails outpaces growth of the rest of their bodies, producing the appearance of sexually mature males. It is found that sexually mature female rats prefer to mate with mutant, sexually mature males that possess snouts and tails with juvenile proportions. Which of the following terms is (are) appropriately applied to this situation?
#Question id: 4984
#SCPH28 | Zoology
A hypothetical mutation in a squirrel population produces organisms with eight legs rather than four. Further, these mutant squirrels survive, successfully invade new habitats, and eventually give rise to a new species. The initial event, giving rise to extra legs, would be a good example of
#Question id: 4985
#SCPH28 | Zoology
The loss of ventral spines by modern freshwater sticklebacks is due to natural selection operating on the phenotypic affects of Pitx1 gene
#Question id: 5012
#SCPH06 I Botany
A | Silurian | I | Seed plants appear |
B | Devonian | II | Gymnosperms dominant |
C | Carboniferous | III | Invasion of land by primitive land plants |
D | Jurassic | IV | first reptiles |
#Question id: 5012
#SCPH28 | Zoology
A | Silurian | I | Seed plants appear |
B | Devonian | II | Gymnosperms dominant |
C | Carboniferous | III | Invasion of land by primitive land plants |
D | Jurassic | IV | first reptiles |
#Question id: 5013
#SCPH06 I Botany
Following is correct match
|
Periods |
Age of evolutionary event |
|
A- Jurassic |
I- Fish |
|
B- Ordovician |
II- Amphibian |
|
C- Devonian |
III- Gymnosperm |
|
D-Carbonyferous |
IV- Invertebrates |